Calypso Developer

Our requirements

• 5+ years hands-on Calypso development experience; V17+ strongly preferred
• Working with APIs, workflows, engines, events, reporting, and scheduled tasks, and integrating it with external systems.
• 5+ years Java development experience.
• Experience with the collateral management module.
• Strong SQL and database experience, preferably Oracle.
• Strong DevOps experience covering source control, build automation, deployment automation, and release management, with hands-on experience using GitHub, Azure DevOps, Ansible, and JFrog Artifactory.
• Solid understanding of fixed income, FX, interest rate derivatives, and credit derivatives.
• Experience supporting high-volume trading environments in investment banking/capital markets.
• Ability to work independently with minimal supervision, collaborate in cross-functional teams, and operate successfully within structured project environments.
• Ability to deal with ambiguity: read between the lines and fill in the blanks, ask clear questions, leverage AI tools to fill gaps, and generally know where to turn to proactively develop solutions.
• Strong communication skills, comfortable working in high-stakes, trader-facing environments.
• Ability to maintain a 3–4 hour overlap with US Eastern business hours, with flexibility during crunch periods.

Optional

• Experience using AI tools to speed up development or testing work.
• Experience working remotely with North American firms.
• A computer science degree from a top technical university.

Your responsibilities

• Build and maintain Calypso APIs, workflows, engines, events, reporting, and scheduled tasks using Java.
• Integrate Calypso with external systems using MQ, Kafka, and Webservice/HTTP.
• Write and optimize SQL, troubleshoot database issues, and work with Oracle-backed Calypso environments.
• Support Calypso applications in Linux/Unix environments, using shell scripting to automate development and operational tasks.
• Maintain and improve build, deployment, and release processes using GitHub, Azure DevOps, Ansible, and JFrog Artifactory.
• Work from requirements and tickets defined by business analysts, thinking critically and contributing your experience and domain knowledge, and actively help shape solutions that empower the bank’s business users.
• Fix defects, participate in code review, and maintain code quality across the Calypso codebase.
• Support testing and validation of changes before they reach production.
• Use AI tools to speed up development or testing work where it makes sense.

About the project

This is how we organize our work

Why Join Us?

What we offer

• Work that matters: build on one of the largest Calypso deployments in the world
• Professional growth: Collaborate with smart, highly capable developers and business administrators in a supportive and challenging environment.
• Direct collaboration: You will work directly with the client team in North America and in Poland.
• Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term.
• Flexibility & remote work: Fully remote position based in Poland or Romania, with increasing schedule flexibility post-onboarding.
• Competitive Compensation: Top pay and ample time-off options.

Recruitment stages

• 1.
  Submit your CV.
• 2.
  Answer a few written questions
• 3.
  Short programming exercise which you can do at your own pace
• 4.
  Participate in a three-stage interview process:
• 5.
  Discuss your experience and skills
• 6.
  Solve verbal algorithm problems
• 7.
  Tackle live coding challenges (no trick questions)

VISTULO sp. z o.o.